<template>
	<view class="cart-container" v-if="cart.length !== 0">
		<!-- 收货地址组件 -->
		<my-address></my-address>

		<view class="cart-title">
			<uni-icons type="shop" size="18"></uni-icons>
			<text class="cart-title-text">购物车</text>
		</view>
		<!-- 循环渲染购物车中的商品信息, 滑动删除-->
		<uni-swipe-action>
			<block v-for="(goods,i) in cart" :key="i">
				<uni-swipe-action-item :right-options="options" @click="swipeItemClickHandler(goods)">
					<my-goods :goods="goods" :showRadio="true" :show-num="true" @radio-change="radioChangeHandler"
						@num-change="numChangeHandler"></my-goods>
				</uni-swipe-action-item>
			</block>
		</uni-swipe-action>

		<!-- 结算组件 -->
		<my-settle></my-settle>
	</view>
	
	<!-- 空白购物车的区域 -->
	<view class="empty-cart" v-else>
	  <image src="/static/cart_empty@2x.png" class="empty-img"></image>
	  <text class="tip-text">空空如也~</text>
	</view>
</template>

<script>
	import badgeMix from '@/mixins/tabbar-badge.js'
	import {
		mapState,
		mapMutations
	} from 'vuex'
	export default {
		// 购物车tabbar 微图标
		mixins: [badgeMix],
		computed: {
			...mapState('m_cart', ['cart'])
		},
		data() {
			return {
				options: [{
					text: '删除',
					style: {
						backgroundColor: '#C00000'
					}
				}]
			};
		},
		methods: {
			...mapMutations('m_cart', ['updateGoodsState', 'updateGoodsCount', 'removeGoodsById']),
			// 传递my-goods组件传递过来的对象{goods_id,goods_state}给vuex
			radioChangeHandler(obj) {
				this.updateGoodsState(obj)
			},
			// 修改商品数量
			numChangeHandler(obj) {
				this.updateGoodsCount(obj)
			},
			// 滑动删除
			swipeItemClickHandler(goods) {
				this.removeGoodsById(goods.goods_id)
			}
		},

	}
</script>

<style lang="scss">
	.cart-container {
		// 结算组件会压住商品，给与结算组件一样高度就不会了
		padding-bottom: 50px;
	}

	.cart-title {
		height: 40px;
		display: flex;
		align-items: center;
		font-size: 14px;
		padding-left: 5px;
		border-bottom: 1px solid #efefef;

		.cart-title-text {
			margin-left: 10px;
		}
	}
	.empty-cart {
	  display: flex;
	  flex-direction: column;
	  align-items: center;
	  padding-top: 150px;
	
	  .empty-img {
	    width: 90px;
	    height: 90px;
	  }
	
	  .tip-text {
	    font-size: 12px;
	    color: gray;
	    margin-top: 15px;
	  }
	}
</style>